TeachLogic IRF-2650 Forum 232 Wireless Classroom Microphone System with Sapphire Mic & 4 Ceiling-Mount Speakers

TeachLogic IRF-2650 Forum 232 Wireless Classroom Microphone System with Sapphire Mic & 4 Ceiling-Mount Speakers

TeachLogic IRF-2650 Forum 232 Wireless Classroom Microphone System with Sapphire Mic & 4 Ceiling-Mount Speakers

B&H # TEIRF2650CS4 MFR # IRF-2650/CS4

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TeachLogic IRF-2650 overview

  • 1Description

The IRF-2650 Forum 232 Wireless Microphone System from TeachLogic is a sound-field system for classroom presentation. This system consists of an IMA-232 Amplifier/Receiver Base Station, IRT-60 Sapphire Microphone Transmitters with Lithium-ion Batteries, IRH-35 Handheld Infrared Transmitter/Microphone with NiMH Batteries, an ICS-55 Ceiling Sensor for IR connectivity throughout the room, and four CS-4 Ceiling Speakers. It also includes a BRC-55 Drop-In Charger for charging the Sapphire transmitters.

The IRF-2650 features a Digital Feedback Guard (DFG) that eliminates acoustical feedback. The wireless Sapphire microphone has a capsule which allows maximum gain before feedback. It has a 50W Digital Hybrid Class D amplifier. The system allows remote adjustment of inputs via the RS-232 wall panel controller. The unit has two infrared wireless microphones which can be used simultaneously. It provides two auxiliary line inputs for multi-media integration with even distribution of sound for the audio in the classroom. The Forum 232 has a Line level output for lesson capture and another output for Assistive Listening System (ALS).

The Forum 232 is an infrared wireless microphone sound system. It is the nucleus of the classroom sound field system which provides optimum voice reinforcement. The wireless function permits 360° connectivity throughout the classroom regardless of body position or orientation.

The system is comprised of an infrared detecting sensor installed in the ceiling. The sensor collects the IR wireless signal from the microphone/transmitter and sends a composite signal to the mixer/amplifier via the included 50' plenum-rated cable. The receiver transforms the composite signal into an analog audio signal which is fed to the amplifier mixer. Two other audio sources, such as computer, DVD, VCR, or projector can be plugged in to the Forum 232. The volume level of each input will be controlled by the individual volume control of each input. The audio will then be fed to the speakers in the room for even voice reinforcement throughout the room.

On the front panel of the Forum 232, there are two 3.5mm output jacks for interface with an assistive listening system (ALS) and lesson capture (REC). The rechargeable batteries offer 6 to 8 hours of usage per charge. The drop-in charger will recharge the batteries overnight, ready for another day’s use.

  • Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply

    The Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply from TeachLogic is the nucleus of the Forum 232 Wireless Classroom Microphone System. This receiver is designed for use with the Sapphire or handheld microphone transmitters (all sold separately). These transmitters transmit the vocal signal via infrared light to the dome sensor (sold separately) installed on the ceiling. The signal is then sent via cable to the receiver input of the mixer/amplifier. The signal is detected and then processed through the power amplifier to the speakers.

    The unit features RS-232 wall panel control of the line inputs, remote teacher security alert, teacher priority with instant attenuation of the line levels via Sapphire IRT-60 pendant mic (available separately), DFG (Digital Feedback Guard), and switchable anti-hum circuit on the computer input.

    Dual infrared wireless microphone receivers
    Two Power Amplifiers: Total 50W RMS Class D amplifier, 25W each channel
    Security alert output
    RS-232 wall panel control of line input levels
    Switchable computer anti-hum circuit with ON/OFF switch
    Teacher priority instantly attenuates all line inputs
    Three-band digital equalizer ±12dB
    Digital limiting
    Two stereo auxiliary inputs for DVD and computer/Aux
    Additional DVD input gain, adjustable +10 dB boost
    3.5mm front-panel auxiliary input
    3.5mm ALS output for assistive listening system with gain control on front panel
    3.5mm REC output for lesson capture with gain control on front panel
    Powers up to 4 speakers (not included)
    Power sleep mode to conserve energy
    Rack or shelf mountable using optional kits (not included)
    Lightweight aluminum cover
  • Infrared Dome Sensor

    TeachLogic's Infrared Dome Sensor needs to be installed on the ceiling at least 3' from the video projector. It comes with a mounting/support bracket and 50' of plenum rated cable with RCA connector on each end. The ideal location for the dome sensor would be in the center of the ceiling. This will provide a clear signal path for the IR transmission from the transmitter to the dome sensor without obstruction. In addition, you will have 360° coverage and will minimize the transmission distance for more reliable performance. It collects the infrared transmission signal via 6 large detecting diodes. The sensor is connected to the mixer/amplifier via a plenum rated cable terminated with RCA connectors. The mixer/amplifier supplies the power to the sensor.

    Easily installs on ceiling "T" bar with track bracket
    6 large receiving diodes for infrared reception
  • Handheld Infrared Transmitter/Microphone with NiMH Batteries (Channel A and B)

    TeachLogic's Handheld Infrared Transmitter/Microphone with NiMH Batteries (Channel A and B) has an ergonomic design that provides user comfort and very low handling noise. The unidirectional condenser reproduces excellent vocal quality and the windscreen prevents breath pops. The emitting diodes are located around the top and bottom end of the handle for 360° transmission and assured connectivity throughout the classroom. Two rechargeable NiMH batteries are included.

    Condenser microphone element
    Power "on/off" switch
    Battery level indicator-LED
    2-channel selectable
    10 high-power emitting diodes
    Diodes at top and bottom of handle for increased coverage (2 top aimed out, 6 bottom 360°, 2 bottom aimed down)
    360º IR radiation for assured connectivity
  • IRT-60 Sapphire Infrared Transmitter/Microphone w/ Security Alert & Rechargeable Battery

    Well suited for classrooms and forums, the rechargeable IRT-60 Sapphire Infrared Transmitter/Microphone from TeachLogic offers the same aesthetic design and feature set as the IRT-55 Sapphire, but with an additional remote "Security Alert", allowing teacher priority with instant attenuation of the line levels to work with the optional Forum 232 and Maxim III amplifiers.

    The Sapphire can be worn with a lanyard or clipped directly to your neckline collar and offers a high level output, reliable connectivity, and great definition. With a built-in breath filter, the Sapphire can function as a pass-around hand microphone. Tapping the power button momentarily mutes the microphone, allowing for private conversations. The 3.5mm auxiliary input allows wireless playback of your iPod, while a three-position slide switch provides selections of low, medium, or high microphone volume levels. The included Lithium-Ion battery offers up to 9 hours use. The Sapphire IRT-60 ships with a BRC-15 wall charger and a breakaway lanyard.

    • Long-life Lithium-Ion battery
    • Rechargeable via micro USB cable
    • Battery level indicator, back light under power switch
    • Momentary mute button, backlight blinks in mute mode
    • Lightweight Design: 1.4 oz
    • Push "on/off" power
    • Channel A or B selectable
    • Three level microphone volume switch (low, medium, high)
    • Auxiliary input (3.5mm)
    • Low profile clip for mounting
    • Wear with a lanyard or directly to neckline collar
    • Includes BRC-15 wall charger
  • SP-628 Ceiling Speaker, Coaxial, 8 ohm, with Metal Back Can and Tile Bridge

    TeachLogic's SP-628 Ceiling Speaker, Coaxial, 8 ohm, with Metal Back Can and Tile Bridge is a full range compact coaxial ceiling speaker that provides low distortion and a smooth natural frequency response, making it great for articulate vocal clarity. The speaker has an integrated steel back can along with a 24" tile bridge which allows for quick and easy installation. The speaker is ETL Plenum rated and conforms to UL2043 standard.

    Air sealed metal back can for an infinite baffle
    6" cone driver with a 1" Mylar dome tweeter
  • BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters

    TeachLogic's BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters is a drop-in charger for two TeachLogic Sapphire transmitters and one IRH-35 or IRH-40 handheld micrphone/transmitter.

In the Box
Bundle Items
  • Limited 5-Year Warranty
  • 50' 75Ω Dual-Shielded Plenum-Rated Cable
  • Limited 5-Year Warranty
  • 2 x NiMH Batteries
  • Limited 5-Year Warranty
  • Rechargeable Lithium-Ion Battery
  • BRC-15 Plug-In Wall Charger for Sapphire Transmitter
  • Breakaway Lanyard
  • Limited 5-Year Warranty for IRT-60
  • Limited 2-Year Warranty for Lithium-Ion Battery
  • Galvanized Steel Tile Bridge
  • Limited 5-Year Warranty

Also Includes

  • 100' Speaker Cable
Table of Contents
  • 1Description
  • Forum 232 2-Channel Infrared Receiver/Amplifier Base Station with Switching Power Supply
    Receiver Input Infrared FM
    Modulation FM Wide-band
    Reception Frequencies Channel A: 2.08 MHz
    Channel B: 2.54 MHz
    IR Wavelength 850 nm
    Tone Signal Channel A: 32.768 kHz
    De-Emphasis 50 µs
    Frequency Response 40 Hz, -18 kHz, ± 3 dB
    S/N Ratio > 65 dB
    THD < 1% @ 1 kHz
    Nominal Deviation ± 10 kHz
    Maximum Deviation ± 25 kHz
    Sensor Input External: 2 x RCA
    Connectivity Coverage: 1,600 sq. ft
    AUX Inputs 1 x DVD, line level, dual RCA with +10dB gain control
    1 x Aux input with front and rear panel 3.5mm
    Line Output 2 x 3.5mm with gain control on front panel
    Equalization 3-Band ±12 dB
    Output Power 2 x Digital amplifiers, 25 W each (RMS) 50 W total (RMS)
    Output Impedance 4 Ω minimum per channel
    Output Connection 1 x Phoenix connector
    Power Supply 19 VDC / 3.4 A
    Certifications CE, CSA, and UL listed
    Dimensions (W x H x D) 8.5 x 1.7 x 7.5" (215.9 x 43.1 x 190.5 mm)
    Weight 1.5 lb (0.6 kg)
  • Infrared Dome Sensor
    Operating Frequencies 2.3 mHz to 2.8 mHz
    IR Receiver 6 large lens diodes
    Coverage 360°
    Range 40-50' (12.19-15.24 m) line of sight, 2500 ft2 (232.25 m2)
    Mounting Clip-on "T" bar bracket
    Connector Female RCA
    Indicator Lights Green LED for Power On
    Cable 75 ohm
    Cable Length 50' (15.24 m)
    Dimensions 4.62 x 1.37" (11.73 x 3.47 cm)
    Weight 0.46 lbs (0.2 kg)
  • Handheld Infrared Transmitter/Microphone with NiMH Batteries (Channel A and B)
    Transmission Carrier: Infrared
    Transmission Frequency 2.08 MHz and 2.54 MHz
    Channel Switching A and B, 2-Channel Field Switchable
    Transmitting Diodes 10
    Modulation FM Wide-Band
    Frequency Pilotone: 32.768 kHz
    Peak Deviation ± 25 kHz
    Operating Range 60' (18.28 m), 2500 ft² (232.25 m2)
    Power Switch On/Off Slide
    Battery Charge Display Green (Useable Charge)
    Red (Needs Charging)
    Battery Life Approximately 7 Hours
    Diameter Head: 2.12" (5.38 cm)
    Body: 1.43" (3.63 cm)
    Dimensions 9.62" (24.43 cm)
    Weight With Battery: 0.64 lbs (0.29 kg)
    Packaging Info
    Box Dimensions (LxWxH) 10.3 x 2.8 x 2.5"
  • IRT-60 Sapphire Infrared Transmitter/Microphone w/ Security Alert & Rechargeable Battery
    Transmitter Carrier: Infrared
    Transmission Frequency 2.08 and 2.54 MHz
    Channel Channel A or B, field switchable
    Transmitting Diodes 6
    Modulation FM Wide-Band
    Pilot Tone Frequency: 32.768 KHz
    Peak Deviation ± 25KHz
    Operating Range 60' / 18.28 m (line of sight), 1,500' ² / 139.35 m²
    Indicator Lights Blue: Full
    Purple: Medium
    Red: Low
    Flashing Red: Very low battery
    Battery 3.7 V, 620 mAh Lithium-ion
    Battery Life Approximately 8-9 hours
    External Power External Power Charger: 5 VDC, micro USB connector
    Transmission Angle 180° conical
    User Controls Power Switch (Push): On/off
    Mute Switch (Push): On/off
    Microphone Switch (3 position): +6 db, normal, -3 db
    Auxiliary Volume/Gain: Increase, decrease
    Channel Select: A or B, in battery compartment
    Auxiliary Input External Aux Input: 0.13" / 3.5 mm stereo line level
    Dimensions (H x W x D) 3 x 1.25 x 0.75" / 7.62 x 3.17 x 1.9 cm
    Weight 1.4 oz / 39.68 g
  • SP-628 Ceiling Speaker, Coaxial, 8 ohm, with Metal Back Can and Tile Bridge
    Frequency Response 80 Hz to 15 kHz, ± 6dB
    Power 30 Watts Continuous
    Sensitivity 89dB SPL (1W/1M)
    Crossover Frequency 6 kHz
    Nominal Coverage Angle 90 x 90°
    Driver 5.25" (13.33 cm) Polymica/rubber
    1" (2.54 cm) high efficient domed tweeter, neodymium
    Enclosure Material Air sealed metal back can with infinite baffle
    Termination Screw terminals for secure speaker wire connection
    Mounting Three quick-mount clamps
    Dimensions (HxD) 5.5 x 8" (13.97 x 20.32 cm)
    Weight 5.12 lbs (2.32 kg)
    Magnet: 10 oz (0.28 kg)
    Packaging Info
    Box Dimensions (LxWxH) 9.0 x 8.9 x 6.3"
  • BRC-55 Drop-In Charger for Sapphire and IRH-35/40 Microphones/Transmitters
    Compatibility Compatible with TeachLogic Sapphire and IRH-35/40 Microphones/Transmitters
    Power 110V
    Charging Time 10-12 Hours
    Indicator Lights Red: Charging
    Green: Charged
    Dimensions 7.75 x 2.75 x 3.75" (19.68 x 6.98 x 9.52 cm)
    Weight 1.75 lb (0.79 kg)

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